t X-rayy crystal structures of a series of cationic (P-P)palladium(3,3-(CH3)2-C3H3) complexes (P-P = dppe (1,2bis(diphenylphosphino)ethane),, dppf (l,l'-bis(diphenylphosphino)ferrocene), DPEphos) and the (Xantphos)Pd(C3H5)BF44 complex have been determined. In the solid state structure, the phenyl rings of the ligandss are oriented in the direction of the non-symmetrically bound [3,3-(CH3)2-C3H3...

Purpose: With increasing cone angle the cone– beam artifacts in x–ray CT become more and more prominent. It is well known that cone–beam CT (CBCT) does not satisfy the data completeness condition for exact image reconstruction and therefore allows only for approximate image reconstruction [1]. Additionally, in clinical C–arm CT often only a short scan with less than a full rotation can be acqui...

The puprose of this study was to evaluate retention force of conical double crowns in two material connections: gold casting alloy/gold casting alloy and gold casting alloy/gold electroforming alloy. 12 crown pairs of both material connections with the cone angles of 2°, 4° and 6° were made. Experiment of 10.000 in-and-out cycles was performed using a new device which allows the retentive force...

The liquid fuel breakup mechanism in spray injection with ambient air for diesel and biodiesel at different temperatures is studied numerically. We find that type low temperature induces more entrainment volume to the boundary of than higher temperature. Meanwhile, normalized parcel density 12% larger peaks a shorter distance along line from point (42 vs. 46 mm). Biodiesel demonstrates maximum ...

In the present work, a study of thermoelastic analysis of a rotating thick truncated conical shell subjected to the temperature gradient and non-uniform internal pressure is carried out. The formulation is based on first-order shear deformation theory (FSDT), which accounts for the transverse shear. The governing equations, derived using minimum total potential energy principle, are solved, usi...

the produced electric and magnetic fields due to lightning strikes to mountainous ground are determined in this paper. for the sake of simplicity a cone-shaped ground with finite conductivity is assumed to represent a natural nonflat ground. by this assumption, we deal with an axillary symmetrical structure so we use the cylindrical 2d-fdtd to save the simulation memory and time, dramatically. ...

The dot product formula allows one to measure an angle determined by two vectors, and a formula known to Euler and Lagrange outputs the measure of a solid angle in R3 given its three spanning vectors. However, there appears to be no closed form expression for the measure of an n-dimensional solid angle for n > 3. We derive a multivariable (infinite) Taylor series expansion to measure a simplici...

RATIONALE With the current state-of-the-art detection of ions only taking place under vacuum conditions, active pixel detectors that operate under ambient conditions are of particular interest. These detectors are ideally suited to study and characterize the charge distributions generated by ambient ionization sources. METHODS The direct imaging capabilities of the active pixel detector are u...